<template>
    <div>
        <panel-head :route="route" />
    <div class="btns">
        <el-button :icon="Plus"  type="primary" @click="open(null)" size="small">新增</el-button>
    </div>
    <el-table :data="tableData.list" style="width: 100%">
        <el-table-column prop="id" label="id" />
        <el-table-column prop="name" label="昵称" />
        <el-table-column prop="permissionName" label="菜单权限" width="500px" />
        <el-table-column label="操作">
            <template #default="scope">
                <el-button type="primary" @click="open(scope.row)">编辑</el-button>
            </template>
        </el-table-column>
    </el-table>
    <div class="pagination-info">
        <el-pagination
            :current-page="paginationData.pageNum"
            :page-size="paginationData.pageSize"
            :background="false"
            size="small"
            layout="total, prev, pager, next"
            :total="tableData.total"
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            />
    </div>
    
    <el-dialog 
    v-model="dialogFormVisable" 
    :before-close="beforeClose" 
    title="添加权限" 
    width="500"
    >
        <el-form 
        ref="formRef" 
        label-width="100px" 
        label-position="left"
        :model="form"
        :rules="rules"
        >
        <el-form-item v-show="false" prop="id">
            <el-input v-model="form.id" />
        </el-form-item>
            <el-form-item label="名称" prop="name">
                <el-input v-model="form.name" placeholder="请填写权限名称" />
            </el-form-item>
            <el-form-item label="权限" prop="permissions">
                <el-tree 
                    ref="treeRef"
                    style="max-width: 600px;"
                    :data="permissionData"
                    node-key="id"
                    show-checkbox
                    :default-checked-keys="defaultKeys"
                    :default-expanded-keys="[2]"
                />
            </el-form-item>
        </el-form>
        <template #footer>
            <div class="dialog-footer">
                <el-button type="primary" @click="confirm(formRef)">确认</el-button>
            </div>
        </template>
    </el-dialog>
    </div>
</template>

<script setup>
import{ref, reactive, onMounted, nextTick } from 'vue'
import { userGetMenu, userSetMenu, menuList} from '../../../api'
import { Plus } from '@element-plus/icons-vue'
import { useRoute } from 'vue-router';

const route = useRoute()

onMounted(()=>{
    // 菜单数据
    userGetMenu().then(({ data }) =>{
        permissionData.value = data.data
    })
    getListData()
})

// 列表数据
const tableData = reactive({
    list:[],
    total:0
})

// 打开弹窗
const open = (rowData = {})=>{
    dialogFormVisable.value = true
    // 弹窗打开form生成是异步的
    nextTick(()=>{
        if(rowData){
            Object.assign(form,{id:rowData.id, name:rowData.name})
            treeRef.value.setCheckedKeys(rowData.permission)
        }
    })
}

const paginationData = reactive({
    pageNum:1,
    pageSize:10
})

// 点击页码
const handleSizeChange=(val)=>{
    paginationData.pageSize = val
    getListData()
}

// 页数
const handleCurrentChange=(val)=>{
    paginationData.pageNum = val
    getListData()
}


// 请求列表数据
const getListData = ()=> {
    menuList(paginationData).then(({data})=>{
        const { list, total } = data.data
        tableData.list = list
        tableData.total = total
    })
}

const formRef =ref()

// form的数据
const form = reactive({
    id:'',
    name:'',
    permissions:''
})

// 树形菜单权限数据
const permissionData = ref([])


// 弹窗的显示和隐藏
const dialogFormVisable = ref(false)

// 关闭弹窗的回调
const beforeClose =()=>{
    dialogFormVisable.value = false
    // 重置表单
    formRef.value.resetFields()
    // tress选择重置
    treeRef.value.setCheckedKeys(defaultKeys)
}

// 选中权限
const defaultKeys = [4,5]
const treeRef =ref()

    const rules =reactive({
        name:[{required:true, trigger:'blur',message:'请输入权限名称'}]
    })


// 表单提交
const confirm = async(formEl)=>{
    if(!formEl)return
    await formEl.validate((valid,fields)=>{
        if(valid){
            // 获取到选择的checkbox数据
            const permissions =  JSON.stringify(treeRef.value.getCheckedKeys())
            userSetMenu({ name:form.name, permissions, id:form.id}).then(({ data })=>{
                beforeClose()
                getListData()
            })
        }else{

        }
    })
}

</script>

<style lang="less" scoped>
.btns{
    padding: 10px 0 10px 10px;
    background-color: #fff;
}
</style>